Bug 1924557 - Display Compose Bookmarks secret setting in all channels r=android-reviewers,007

Differential Revision: https://phabricator.services.mozilla.com/D225539

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/settings/SecretSettingsFragment.kt

@@ -79,7 +79,7 @@ class SecretSettingsFragment : PreferenceFragmentCompat() {
         }
 
         requirePreference<SwitchPreference>(R.string.pref_key_use_new_bookmarks_ui).apply {
-            isVisible = Config.channel.isNightlyOrDebug
+            isVisible = true
             isChecked = context.settings().useNewBookmarks
             onPreferenceChangeListener = SharedPreferenceUpdater()
         }